BZX79-C36,133 Equivalent & Substitute Parts

Part Overview

The BZX79-C36,133 is a 36 V Zener diode rated for 400 mW power dissipation, manufactured by Nexperia USA Inc. This through-hole component operates across a temperature range of -65°C to 200°C and is packaged in the DO-204AH (DO-35) axial configuration. The device maintains an active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format preferences, or tolerance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	36	V
Tolerance	±5%	—
Power - Maximum	400	mW
Impedance (Maximum)	90	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 25.2 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—

Substitute Part Grouping Explanation

Substitute parts for the BZX79-C36,133 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Zener (Nominal): 36 V
Power - Maximum: 400 mW
Impedance (Maximum): 90 Ohms
Current - Reverse Leakage @ Vr: 50 nA @ 25.2 V
Voltage - Forward (Maximum) @ If: 900 mV @ 10 mA
Operating Temperature Range: -65°C to 200°C
Mounting Type: Through Hole
Package / Case: DO-204AH, DO-35, Axial

Allowable Variation:

Tolerance: ±2% to ±5% (tighter tolerance acceptable)
Packaging Format: Tape & Box, Bulk, or Cut Tape (all compatible with through-hole assembly)
Manufacturer: Nexperia USA Inc. or NXP Semiconductors (same product family)

All substitute parts maintain identical electrical performance and mechanical compatibility with the main part number.

Parameter Comparison

Parameter	BZX79-C36,133	BZX79-C36,113	BZX79-B36,143	BZX79-C36,143
Voltage - Zener (Nom)	36 V	36 V	36 V	36 V
Tolerance	±5%	±5%	±2%	±5%
Power - Max	400 mW	400 mW	400 mW	400 mW
Impedance (Max)	90 Ohms	90 Ohms	90 Ohms	90 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 25.2 V	50 nA @ 25.2 V	50 nA @ 25.2 V	50 nA @ 25.2 V
Voltage - Forward (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 200°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Manufacturer	Nexperia USA Inc.	NXP Semiconductors	NXP Semiconductors	Nexperia USA Inc.
Packaging Format	Tape & Box	Bulk	Bulk	Cut Tape
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

BZX79-C36,113 (NXP Semiconductors) This part is electrically and mechanically identical to the main part number. The primary difference is packaging format (Bulk versus Tape & Box) and manufacturer designation (NXP Semiconductors versus Nexperia USA Inc.). Selection is appropriate when bulk packaging is acceptable for assembly operations. Product status is Active.

BZX79-B36,143 (NXP Semiconductors) This part offers tighter tolerance specification (±2% versus ±5%), providing improved voltage accuracy. All other electrical parameters and mechanical specifications are identical. Selection is appropriate when stricter voltage tolerance is required for circuit performance. Product status is Active.

BZX79-C36,143 (Nexperia USA Inc.) This part maintains identical electrical specifications and tolerance to the main part number. The primary difference is packaging format (Cut Tape versus Tape & Box). Selection is appropriate when cut tape packaging is preferred for automated assembly or inventory management. Product status is Active and RoHS3 compliant.

All substitute parts are manufactured by Nexperia USA Inc. or NXP Semiconductors (same corporate entity), maintain Active product status, and are REACH Unaffected with EAR99 classification.

Frequently Asked Questions (FAQ)

Q: Can BZX79-C36,113 be used as a direct replacement for BZX79-C36,133? A: Yes. Both parts have identical electrical specifications (36 V nominal, 400 mW, ±5% tolerance) and mechanical compatibility (DO-35 axial through-hole package). The difference is packaging format only (Bulk versus Tape & Box).

Q: What is the advantage of BZX79-B36,143 over the main part number? A: BZX79-B36,143 provides ±2% tolerance compared to ±5% tolerance on BZX79-C36,133. This tighter tolerance specification results in more precise zener voltage regulation. All other electrical and mechanical parameters are identical.

Q: Are there any compliance differences between substitute parts? A: BZX79-C36,133 and BZX79-C36,143 are both specified as ROHS3 Compliant. BZX79-C36,113 and BZX79-B36,143 do not have RoHS status specified in available documentation. All parts are REACH Unaffected and classified as EAR99.

Q: Does packaging format affect electrical performance? A: No. Packaging format (Tape & Box, Bulk, or Cut Tape) does not affect electrical performance. Format selection is based on assembly process requirements and inventory management preferences.

Q: Can these parts be used interchangeably in existing designs? A: Yes, provided the circuit design accommodates the specified tolerance range. BZX79-B36,143 with ±2% tolerance is suitable for any application requiring BZX79-C36,133 with ±5% tolerance. The reverse substitution (±5% part replacing ±2% part) requires circuit design verification.

Q: What is the operating temperature range for all substitute parts? A: All parts operate across -65°C to 200°C. This range is identical across all substitute options.

Q: Are there inventory availability differences? A: Yes. BZX79-C36,113 has the highest inventory (210,689 pcs), followed by BZX79-B36,143 (124,893 pcs), BZX79-C36,143 (5,617 pcs), and BZX79-C36,133 (889 pcs). Availability should be considered when selecting substitute parts for production quantities.

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